FIELD: mining. SUBSTANCE: method includes making of relieving slots by drilling of series of distributed holes from operation working. The latter L-shaped in plan is driven near shaft. Under the action of rock pressure interhole untouched blocks collapse to fill slots. In this case, section of rock mass within design outline of relieving slot, which is impossible to be drilled with holes from operation working is to be relieved in process of formation of compensation units and yielding members. Distance between hole centers are calculated by formula. EFFECT: higher efficiency. 3 dwg
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Authors
Dates
1994-08-30—Published
1992-01-03—Filed